protective clothing? Chemical-resistant materials prevent the measurable movement of certain chemicals through the material to your protected skin for a limited period of use or time.
Definition of conscious. 1  1 : perceiving, apprehending, or noticing with a degree of controlled thought or observation conscious of having succeeded was conscious that someone was watching. 2  2 archaic : sharing another's knowledge or awareness of an inward state or outward fact. 3  3 : personally felt conscious guilt.
reflex definition. An action or movement not controlled by conscious thought. A reflex may be anything from a hiccup to the involuntary response of a body part, such as the action that occurs in the knee-jerk reflex.